Globally, Ffrench-Mullen (Ffrench-Mullen 
) is an extremely rare unknown gender first name. Much more frequently, Ffrench-Mullen is the last name as well as the forename. Parts of the name also exists independently as a last name Ffrench, and a last name Mullen.
| VARIANT | COUNTRY |
|---|---|
| Ffrench-Mullen | United States, United Kingdom |